There will always be bans, regardless of what botting client you use - the same old rule applies: Never bot on an account your are not willing to lose.

Regarding Spectre, it is working well for me personally and I have managed to bot several hours a day on my account since release with no issues.

Depending on if you are wanting to play RS3 or OSRS, there are matching bots to suit. Some experience bugs, however if you take the initiative and post a bug report in the bot author's thread, it will help things get fixed sooner.